Russell Freedman is the award-winning author of numerous books. His nonfiction books range in subject from the lives and behaviors of animals to people in history whose impact is still felt today. Freeedman's work has earned him several awards, including a Newbery Medal in 1994 for Lincoln: a Photobiography, a Newbery Honor each for Eleanor Roosevelt: A Life of Discovery in 1994 and The Wright Brothers: How They Invented the Airplane in 1992, and a Laura Ingalls Wilder Medal.
Elizabeth Mann has written nine Wonder of the World books, an award-winning series cited by Booklist as one of the ten best nonfiction series for young readers.Alan Witschonke graduated from Rhode Island School of Design. He was the illustrator of two previous Wonder of the World books, Hoover Dam and The Brooklyn Bridge.